Abstract
In this paper, we present a decision feedback equalizer (DFE) that uses the quadrature components of 8-VSB signals in ATSC systems to mitigate multipath distortion efficiently. Unlike the conventional DFE structure for 8-VSB signals in which a real-valued feedback filter is used with real-valued decisions, the proposed DFE uses a complex-valued feedback filter with a complex-valued feedback sample generator. Due to the difficulty in analyzing a recursive system, we present a limited performance analysis on the proposed algorithm that a well-modeled feedback filter successfully cancels multipath channels with quadrature leakages in the absence of noise. For the performance comparison with conventional DFEs in realistic environments, we uses simulation methods.
Original language | English |
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Article number | 4586429 |
Pages (from-to) | 394-400 |
Number of pages | 7 |
Journal | IEEE Transactions on Broadcasting |
Volume | 54 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2008 Sept |
Bibliographical note
Funding Information:Manuscript received March 20, 2008; revised May 12, 2008. First published August 4, 2008; last published August 20, 2008 (projected). This work was supported by a Korea University Grant and the Brain Korea 21 project in 2008. The author is with the Division of Computer and Communications Engineering, Korea University, Seoul 136-701, Korea (e-mail: [email protected]. kr). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TBC.2008.2001149
Keywords
- 8-VSB
- Decision feedback equalizer
- Feedback sample generator
- Hubert transformation filter
- Vestigial sideband
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering